High Pulse Water Flow Function - You can enjoy a comfortable flossing experience! COOSKIN cordless water flosser provides 30-110 Psi pressure water pulse function with 2 other modes, high and soft, for different needs (sensitive teeth or wear braces) and different oral issues (dental plaque or tooth decay). It improves your gum health and clean your teeth efficiently, and the innovative memory function keeps your preferable mode for your next use. [7.8 oz] Large Reservoir with Rechargeable Long-Life Battery The detachable & leak-proof reservoir eliminates the needs for frequent filling as your best flosser partner for daily teeth-flossing.The built-in 1800 mAh rechargeable lithium battery, lasting 24-30 days per charge. It eliminates the needs for frequent charging as your best flosser partner while traveling.Package includes: Water Flosser x 1, Jet Tips x 4 (Standard jet tip, Orthodontic tip, Periodontal Pocket tip, Tongue Scraper), USB Cable to Charge x 1, and the instruction.